40155268613 has 2 divisors, whose sum is σ = 40155268614. Its totient is φ = 40155268612.

The previous prime is 40155268579. The next prime is 40155268649. The reversal of 40155268613 is 31686255104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39540129409 + 615139204 = 198847^2 + 24802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40155268613 is a prime.

It is a super-2 number, since 2×40155268613² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40155268663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20077634306 + 20077634307.

It is an arithmetic number, because the mean of its divisors is an integer number (20077634307).

Almost surely, 2^40155268613 is an apocalyptic number.

It is an amenable number.

40155268613 is a deficient number, since it is larger than the sum of its proper divisors (1).

40155268613 is an equidigital number, since it uses as much as digits as its factorization.

40155268613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 40155268613 in words is "forty billion, one hundred fifty-five million, two hundred sixty-eight thousand, six hundred thirteen".